Shaper



June 24, 1930. c. .1. DAVIS 1,766,168

' SHAPER Filed March 5, 1928 2 Sheets-Sheet 1 iii-1 gram-n oz June 24, 1930 CG]: ls 1,766,168

SHAPER Filed March 5, 1928 2 Sheets-Sheet 2 QM MM Pat nted J ne 24, 1930; t 7

on, xnm oiv, oHIo,= ooRroRATIoN: OF 0310 SHAP ER Application filed March 5,

Thislinvention relates to improvements in 5 metal shapers; such Tasiare used" in vrailway shops, Where it is desiredrto 'machine locomotive drivingboxeszor other devices.

The object of the inventionis to'iprovide an improved sh'aper 'includinga' reciprocating body or ram'carrying atoolhead and shaping tool at its forward end, togethervvithmeans forlaterallyadjustingthe toolton the head:

I arm (not's'hovvn) in the frame:' OntheiWays inclined cam faces (rand 6 and adapted to be ;.tail hereinafter? Will appear.

' 'to'. varylth'e depth o flicutixthe' tool adjusting means being entirely locatedzwithin rthe con- 4 fines of the ramiand tool-lieadan'd avoiding 'latera-lproj ection. ther'efrom,x-.so that theram may; be; reciprocated through' at confining opening, and in' EWhih the "stool adjusting" mechanismiis 'operatablef-manually from h the front of the headyinncon' nection with which i v a micrometer scale is"v provided, enabling the operatorlto manuallyproduce asfine adjustment of the mechanism=vvhile themachine is operating i all for purposeswhich will-more fully-appearhereinaftertfl "Furtheriob'jects ofthe invention are part;

obvious -and'in partjvv -ill' appear :more de- Inlthe drawings," iwhichirepresentone suit-' ableiernbodimentiof thefinvention, Fig; 1 isa. sidi elevation, illustratingthe :rami applied in use; Fig; 2 is anfend elevation"from the" left fin Fig. '1; F i'gfi3lis ai iliongitiidinal sectional elevation "on 'a llargerfscale on: the line "3-35 Fig; 6 is a side elevation", partly broken' out and in longitudinalf'section on "the line 6 6,

2 is-longitudinallyadjustable a'dog 4' having secured in variousfpositionsf along "the Ways to actuate the' tool feeding -fmaclianism, as

The Work to be machined, '%marked 8, is

1928. Serial No. 259349.

mounted upon the'frame bed/Z and in the i drawings is shown as a locomotive driving box in which a'cylindrical opening is to be machined. The opening is slightly; larger thanrf the body of the ram and the clearance isinby the common tool adjusting devices,. ,whichv usually oproj ect laterally outwardly-from the;

ram and, therefore, extend beyond :thefcon fines of: its body, thereby limiting possible .uses of the machine and alsoimaking it :difli I cult for the "Workman to adjnstrthe parts;

In the present constructionzthei'ramabody'is; providedinternally With bearingsy i), 10-forf a central longitudinal ishaft '11 ;provided 7 at its vfront end Witha cylindricallhea'd12'and: at

its rear end with means for rotatingiit,such? as the wormiwheel 18.4The forward :or;head

'endof the shaftwill firstbesdescribedi- On-thehead 12 is mounted a tool-:carri'eikl ly; pivoted to swing abouta-horizontal pin '15;

Fig.8 by the:compressionspringlfisurrounds- .ing: screw. '17 This arrangement fautomati- 1; callypermitsthe tool-carrier toqrelieve"theirf-mrt 'f.

. tool from thevvork'onfthe backvvardoor return strokeyas is'usuaLx On-the 'to0li-carr1er"14-,-or' in other Words; jonv the oscillating or swinging part is mounted the cutting tool '18-, togetherwvitl'i- 'the-;ne,ce's=;

"and normally heldlin the position shown in sary parts-for aecomplishinggits aadj ustmentg j As indicated, the tool 18 is gheld in 'a" slot in,

t a tool box or holder 19- mounted to; slide ver.' I

tically: in an under-cu't- Way or:=ohannelr2O-' of thetool-carrierl ,aThe wallsiof the boxqoni oppositeside'suof the-tool are connected at a .ba'cking'stop fortheup'per end :of the tool j and limits its upper position: injthe tool b'oxi- The'rear? of thebox islthreaded at22; so-that their upperendbya cross-pin21' whichfliorms j it forms a nut Eco-operating ivith-a-threaded shaft '23iisvvivelled iinithe' carrieri at2t and provided vvitha bevelled"? gametes. "meshing;

w ith a bevelled gear 26:ron a shaft 27'pro o-f vided' at its outer'end withca hand'knob '28 9 for-rotating it. By rotatingrsaid knob they tool-box and the tool carried tliereloyz'inaybe;

adjusted upand down; in Fig. '3, to vary;the-

ailisi'of shaft 111: The 'tool is heldin the' -tool;

c t e m hee entral' I i 55??- sufficient ior'the lateral pro ect ons'"formedw fly-projecting end .portion of the ram ad box by a plate 29 clampedtothe box by a series, four being shown, of clamp screws 30, and the tool box may be rigidly and immovably clamped to the ca'rrie'rby a clamping" bar '31 extending across the plate '29 and clamped against the same .by nuts 32 threaded on bolts 33ifixedin the vcarrier. .f. I Y 1 All parts of'the mechanism, it will be noted,

' arewithin theconifines or outer peripheral 1 boundaries of that portion of the mm body j [which enters and recedes from the work, as-

shown in Fig; 3, except that the tool and I possibly a part of the, tool box mayextend beyond it as the tool is adjustedoutwardly.

The clearance between the ram and the surface oflthe vfinished opening, therefore, may

. bea minimum. Moreover, the knob 28 isjat the extreme front end of theram, readily'accessiblelto a workman standing at thefront of the machine. Each time the free forwardvancesto conveniently accessible or exposed blelof-being fixedyin any angularfposition" position the'knob 28 maybe given a slight turn ff g flvenient vernierindicating means,such as a collar 34; rotatable on the shaft 27.-but rcapae "thereon, such as by a' set'screw 35, and pros vided with a vernier scale "36 .co-operating; with indicating'marks 37 I This vernier scale iscloselyadjacenttotheiknob 28 and within the .immediate'vis'ion of. the-operator. In use of the machine the ztooll8 gi'sset at some 7, basic position, such a'swith reference to. an

[4 1 indicating mark on' the machine frame or i by accuratemeasurement from the surface of- .the bed 7, and when in that basic position .is clamped in the toolbox byy'the plate -29. j Thevernier collar 3a is then adjusted to .zero

and [manipulationof the knob 28 will pro-f. duce accuratelymeasuredadjustment ofjthe' -"rtool "to any desired depth .ofcut; Usually. V the workman makes the zero. adjustment,

clampsthe tool in the box l9, starts thema f chineiand makes fine manual adjustments of, p "the tooliintil the' desired 'depthof cutis a reachedjand then clamps theheavy clamping.

bar 31- 130 fixthetoolinposition, whereupon j V is made, for greater rigidity the operator, if

' he throws in the rotatingrfeeding mechanism and produces ste'p by step feed of the tool in thearc of a circle for the working operation. rTo' feed the tool laterally along the work? I means is providedfor rotating shaft 11. Tiers shown'the worm gear 13 at-therear end of said shaft is driven by a worm -38 on a later-l a1 shaft; 39 provided at its outerend witha "hand wheel 40. Said-shaftalso carries a ratchet wheel 41 with which co-operates are-Q leasable spring pawl 42 mounted in a sleeve 43. rotatable on the shaftand yieldingly urged? isprovided with an arm 45 having a roller in one direction by spring/l4. Said sleeve 2 46 adapted to travel on the camsurfaces of. l

the dog4 as the ram approachesits rear 'posi tion; In the sleeve 48 is a spring pressed pin 50.

a Each time the ram makes its "receding stroke the roller 46 rides up on thecam surfaceb. If the spring dog t2-is let in so that it is eifectivethe rotating motion of the sleeve turns shaft 39 and also the shaft 11 and feeds J the tool angularly one step. The sleeve 43 is returned toinitial positionby spring'te. If, i

by chance, the dogt is'set at the wrong position-advanced too 'fa'rroller 46 will travel beyond the cam 5 and up over cam6, to an extreme or safety position, in which the spring plunger 50-enters an openingtZ and'holds.

. the sleeve 43 against'return, so that further feed is prevented." I V fl' At one side of he worm wheel 13. the shaft.

llis provided with a drumportion surroundedby a. split collar 48, the endsof. which are {forced together by-a clamp screw 49. eBy I screwing up this screw the shaft 11 may .be clamped against rotation in caseit isdesired; to use the ram without lateral feed of the tool-5 "The advantages oftheinvention are these:

,The; operator standsat fthe front of themachineor, in otherwords, at thefleft. in Fig; 1, in arpositio'n whereztheram approacheslhim on each of its cutting strokes." .He therefore isin the .best position to view the work. The '1 operatingknob 28 for the tool. adjusting device is at=the extreme front: of the ram and is: therefore 'very' convenient for manipulaiig 1 tion because the operator, has no difficulty in 7 I I finding it with his hand, nor doeszheneedto j j g reach in to the machine beyond other. partslto grasp it with possible liability'of injury; .Hel'} can make the tooladjustment without new ingfrom his position at the frontof the ma-' chine, and, moreover, is enabled tomakeftheiz tool adj ustment' while athe fmachin'e i's actu ally working. Each time the ram comes for 11o ward and'thetoolpassesthrough the work,'l, f the. operator can grasp 1 thev knob 28; and a make such; adj ustment; asymay be .necesslary.- Frequently the work involves one or more. 2

cuts at different depths 'andthe adjustment" fora new depth, or to secure the proper depth.

of cut maybe made whilethe machine isrun'lning; ,Of course, when'the final finishing cu't aresult', this machine is convenient and safe to operate. and will'produce very accurate I work in theleast possible'time, due to the lack v of necessity for stopping thetmachine every 7 2 time a tool adj ustmentis made. .What Iclaimisgj 1 a T v v anlsm therefor, comprlslng feed screw mech- A shaper for cutting cylindrical surfaces, comprisinga reciprocatingram body having a free advance end portion adaptedto enter and recede from the work, a tool head mounted at the advance end of said body to rotate about a longitudinal axis, Y a tool carrier mounted on said head to swing fore and aft about a transverse axis to relive the tool on therreceding stroke, atool holder slidable laterally on said carrier, and operating mechanism rotatable about a transverse axis and connecting said carrier and holder for laterally adjusting the latter, and an operating shaft connected to said mechanism and rotatable in the carrier and having a forwardly I extending'portion readily accessible and 0pnature.

erable manually while the. ram body is moving in advanced position, said' head, earrier, holder and operating mechanism being wholly contained within the outer boundary of the ram body for reciprocation through a confined opening. y

In testimony whereof I hereby aflix my sig CECIL J. DAVIS, 

